Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 630 [Rate centres in NPA 630] [Dial plan for NPA 630]

NXX: 271

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
630-271 A Downers Grove IL DWGVILDGDS0  9329 ILLINOIS BELL TEL CO 358      
630-271 0 Downers Grove IL   9329 ILLINOIS BELL TEL CO 358      
630-271 1 Downers Grove IL   9329 ILLINOIS BELL TEL CO 358      
630-271 2 Downers Grove IL   9329 ILLINOIS BELL TEL CO 358      
630-271 3 Downers Grove IL   9329 ILLINOIS BELL TEL CO 358      
630-271 4 Downers Grove IL   9329 ILLINOIS BELL TEL CO 358      
630-271 5 Downers Grove IL   624H ONVOY SPECTRUM, LLC 358   2021-11-14   
630-271 6 Downers Grove IL   9329 ILLINOIS BELL TEL CO 358      
630-271 7 Downers Grove IL   9329 ILLINOIS BELL TEL CO 358      
630-271 8 Downers Grove IL   9329 ILLINOIS BELL TEL CO 358      
630-271 9 Downers Grove IL   9329 ILLINOIS BELL TEL CO 358      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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